12693726964 has 6 divisors (see below), whose sum is σ = 22214022194. Its totient is φ = 6346863480.

The previous prime is 12693726943. The next prime is 12693726973. The reversal of 12693726964 is 46962739621.

It can be written as a sum of positive squares in only one way, i.e., 7472219364 + 5221507600 = 86442^2 + 72260^2 .

It is a super-2 number, since 2×12693726964² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586715867 + ... + 1586715874.

Almost surely, 2^12693726964 is an apocalyptic number.

It is an amenable number.

12693726964 is a deficient number, since it is larger than the sum of its proper divisors (9520295230).

12693726964 is a wasteful number, since it uses less digits than its factorization.

12693726964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173431745 (or 3173431743 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 55.

The spelling of 12693726964 in words is "twelve billion, six hundred ninety-three million, seven hundred twenty-six thousand, nine hundred sixty-four".